/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.sanselan.formats.gif;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.ArrayList;

class GenericGIFBlock extends GIFBlock
{
	public final ArrayList subblocks;

	public GenericGIFBlock(int blockCode, ArrayList subblocks)
	{
		super(blockCode);

		this.subblocks = subblocks;

	}

	public byte[] appendSubBlocks() throws IOException
	{
		return appendSubBlocks(false);
	}

	public byte[] appendSubBlocks(boolean includeLengths) throws IOException
	{
		ByteArrayOutputStream out = new ByteArrayOutputStream();

		for (int i = 0; i < subblocks.size(); i++)
		{
			byte subblock[] = (byte[]) subblocks.get(i);
			if(includeLengths && i>0)
				out.write(subblock.length);
			out.write(subblock);
		}

		return out.toByteArray();
	}

}